I have been a bit busy (with xmas and all) but i will give all the suggestion ago.

I did notice that the problem with idling was occuring when i was either:
1. operating all the power windows
2. air con is on
3. stock stereo is pumping tunes
I suspect there is a problem with the amps/current being drawn from the battery?

I have also been suggested to do an ecu reset...what do you guys think?